DNA analysis has revealed family relationships between more than 10 generations of Stone Age people at megalithic (巨石的) tombs in Ireland and Sweden.
The evidence suggests that megaliths, prehistoric large stone structures, sometimes acted as graves for family groups in northwestern Europe thousands of years ago. The latest findings throw new light on the origins and social structure of the groups that built megaliths in this region—a history that has long been hidden in mystery.
For their study, the international team of researchers analyzed the genomes—the complete set of genetic material in a cell—of 24 Stone Age individuals from five megalithic burial sites in Ireland, Scotland and Gotland, a large Swedish island in the Baltic Sea.
This analysis showed that many of the individuals buried at each megalith, who all lived between 3,800 B.C. and 2,600 B.C., according to radiocarbon-dating of their remains, were closely related via family ties.
The results also showed that the individuals buried at the megaliths were related to Neolithic farmers in northern and western Europe but genetically distinct from other hunter-gatherers. This was particularly noticeable at the Ansarve site on the island of Gotland.
“The people buried in the Ansarve tomb are remarkably different on a genetic level compared to the individuals dug out from hunter-gather contexts, showing that the burial tradition in this megalithic tomb, which lasted for over 700 years, was performed by distinct groups with roots in the European Neolithic expansion,” Magdalena Fraser, co-first author from Uppsala University, said in the statement.
1.What’s the significance of the new findings?
A. It reveals the family ties between people in Ireland and Sweden.
B. It implies that many people buried in the tombs were closely related.
C. It indicates the long-hidden mystery concerning DNA analysis.
D. It suggests that the megaliths became tombs thousands of years ago.
2.How did the researchers reach their findings?
A. By interviewing individuals. B. By travelling to different regions.
C. By analyzing genes. D. By studying the burial sites.
3.Which is true according to the latest findings?
A. Some people buried in the tombs were related to farmers.
B. Few people buried in the tombs were genetically different.
C. All the people buried at megaliths had family relationships.
D. People buried in the Ansarve tomb were dug out 700 years later.
4.What’s the main idea of this passage?
A. Megaliths served as tombs thousands of years ago.
B. People buried at the megaliths were recently analyzed.
C. Latest findings shed light on a mystery about burials.
D. Stone-Age people in Ireland and Sweden had close ties.
If you're looking to fully experience Africa's breathtaking scenery, and have an eye for adventure, then there's only one place to be. Here, inside Africa picks four of the best hikes from across the continent.
1.Kilimanjaro
Make it to the top of Tanzania's 5,895-meter Kilimanjaro, and you'll be standing at Africa's highest point. The mountain is Africa's most-visited hiking destination, attracting tens of thousands of tourists and adventures every year.
You don't have to a technical climber to climb Mount Kilimanjaro; you just need not be pretty physically fit. There are six routes to choose from difficulty, scenery and success. No special equipment
2.Atlas mountains
The High Atlas is an impressive mountainous range in central Morocco that hosts North Africa's highest peak. Mount Toubkal, at 4,165 meters. There's a variety of routes to follow during your climb but inexperienced climbers should note that the hike through the mountain's challenging zones is quite demanding.
3.Mount Kenya
A long-extinct volcano. Mount Kenya is Africa's second-highest peak, at 5,199 meters.
Lying just south of the equator, the mountain's deep valleys and diverse wildlife will guarantee you wonderful scenery and a fantastic hiking experience.
The climb, however, to the mountain's steep ice-capped peaks is quite challenging, making it the most technical, probably, in that East African area.
4.Mount Meru
Mount Meru may forever exist in the shadow of its neighbor, Kilimanjaro, but Tanzania's second-highest mountain (4,565 meters) has its own devotees.
It's less known, but Mount Meru is for the true enthusiast who wants to experience what very few people actually do.
Mount Meru is often used by mountaineers to accustom themselves before trying to conquer Kilimanjaro, or by those wanting a hike with the local Massai.
1.What do we know about Kilimanjaro?
A. It's comparatively easy to climb.
B. It's Africa's second highest mountain.
C. Its six routes are equally difficult.
D. It lies to the east of Tanzania.
2.Why do mountaineers climb Mount Meru first before they do Kilimanjaro?
A. To avoid big crowds of climbers. B. To hike with the local Massai.
C. To get used to the situation. D. To experience what most people do.
3.Which is the lowest of the four?
A. Kilimanjaro B. Atlas mountains
C. Mount Kenya D. Mount Meru
文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。
增加:在缺词处加一个漏字符号（∧），并在其下面写出该加的词。
删除:把多余的词用斜线（\）划掉。
修改:在错的词下画一横线，并在该词下面写出修改后的词。
注意:1. 每处错误及其修改均仅限一词；
2. 只允许修改10处，多者（从第11处起）不计分。
When I was a child, I hoped to live in the city. I think I would be happy there. Now I am living in a city , but I miss my home in countryside. There the air is clean or the mountains are green. Unfortunately, on the development of industrialization, the environment has been polluted. Lots of studies have been shown that global warming has already become a very seriously problem. The airs we breathe in is getting dirtier and dirtier. Much rare animals are dying out . We must found ways to protect your environment. If we fail to do so , we‘ll live to regret it .
假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。错误涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词。
删除：把多余的词用斜线（\）划掉。
修改：在错的词下划一横线，并在该词下面写出修改后的词。
注意：1.每处错误及其修改均仅限一词；
2.只允许修改10处，多者（从第11处起）不计分。
One day, little Tony went to a shopping center with his parent. It was very crowded. Tony saw a toy on a shop window. He liked it so very much that he quickly walked into the shop. After looks at the toy for some time, he turned around and found where his parents were missing. Tony was scared and begun to cry. A woman saw him crying and telling him to wait outside a shop. Five minutes later, Tony saw parents. Mom said, “How nice to see you again! Dad and I were terrible worried.” Tony promised her that this would never happen again.
假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏字符号(∧)，并在其下面写出该加的词。
删除：把多余的词用斜线(＼)划掉。
修改：在错的词下画一横线，并在该词下面写出修改后的词。
注意：1. 每处错误及其修改均仅限一词；
2. 只允许修改10处，多者(从第11处起)不计分。
My old classroom was interesting because three side of the classroom were made from glass. I enjoyed sit close to the windows and looking at the view. On the left-hand side of the class, I could easy see the football field. In the mornings, it was full of students exercising. The view from the back of the classroom is also splendid. Close to the school there was a beautiful park with many trees around them. Farther in the distance, I could not enjoy the view of snowy mountains. On the right side of the class was the road. I was always interested to see the drivers in hurry in the morning. The position of the classroom with its view made me felt like I was dreaming. If I was only a child when I studied in that classroom, I will never forget it.
下面短文中有10处语言错误。请在有错误的地方增加、删除或修改某个单词。
增加：在缺词处加一个漏词符号（ʌ），并在其下面写出该加的词；
删除：把多余的词用斜线（\）划掉。
修改：在错的词下划一横线，并在该词下面写出修改后的词。
注意：
1. 每句不超过两个错误；
2. 每处错误及其修改均仅限一次；
3. 3.只允许修改10出，多者（从第11处起）不计分。
Hi, Janice,
It's been a month since I came to this new school and I really want share with you some of the
problems I have been experiencing.
As I tell you last time, I made three new friend here. We hang out together during lunch and
after school. We've been spending a lot of time sing in karaoke bars. It's been three Saturdays
now and it really costs me many. And I started to see this as a time—wasting activity! In fact ,I don’t like to go anymore, so I’m afraid I’ll lose their friendship. How do you think I should do? If you are me ,would you talk to him?
Please help with me and give me some advice.
Grace
